CGR 1st Class 4-4-0TT 1881

CGR 1st Class 4-4-0TT 1881
to South African Class 01 4-4-0TT

Works picture of CGR 1st Class 4-4-0TT of 1881
Type and origin
Power type Steam
Designer Robert Stephenson and Company
Builder Neilson and Company
Serial number 2680-2685
Build date 1881
Total produced 6
Specifications
Configuration 4-4-0TT "American"
Gauge 3 ft 6 in (1,067 mm) Cape gauge
Leading wheel
diameter
27 in (686 mm)
Driver diameter 48 in (1,220 mm)
Wheelbase 16 ft 9 12 in (5.118 m) engine
6 ft 6 in (1.981 m) drivers
4 ft 8 in (1.422 m) bogie
Height 12 ft (3.658 m)
Axle load 8 LT 2 cwt (8.2 t) on rear driver
Weight on drivers 15 LT 6 cwt 3 qtr (15.6 t)
Locomotive weight 22 LT 7 cwt 1 qtr (22.7 t) w/o, engine only
Fuel type Coal
Fuel capacity 2 12 long tons (2.5 t)
Water capacity 450 imp gal (2,000 l; 540 US gal) engine
Tender capacity 1,700 imp gal (7,700 l; 2,000 US gal)
Boiler 9 ft (2.743 m) length inside
6 ft (1.829 m) pitch
Boiler pressure 130 psi (900 kPa)
Heating surface:
– Tubes
500 sq ft (46.452 m2)
– Firebox 46 sq ft (4.3 m2)
– Total 546 sq ft (50.7 m2)
Cylinders Two
Cylinder size 13 in (330 mm) bore
18 in (457 mm) stroke
Performance figures
Tractive effort 6,180 lbf (27 kN) at 75% pressure
Career
Operator(s) Cape Government Railways
South African Railways
Class CGR 1st Class, SAR Class 01
Number in class 6
Number(s) M44-M49
Delivered 1881
First run 1881 [1][2]

The CGR 1st Class 4-4-0TT of 1881 is a South African steam locomotive from the pre-Union era in the Cape Colony.

In 1881 the Cape Government Railways placed six more 1st Class tank-and-tender locomotives with a 4-4-0 American type wheel arrangement in service on the Cape Midland system. These engines were built as tender locomotives without on-board coal bunkers and with permanently attached coal and water tenders.[1]

Manufacturer

Six 4-4-0 side-tank-and-tender passenger locomotives were built for the Cape Government Railways (CGR) by Neilson and Company in 1881 and numbered in the range from M44 to M49 in the Cape Midland System’s number range. They were built to the same specifications as the eleven 1st Class 4-4-0T and 4-4-0TT locomotives of 1875 and 1880 respectively, but without the coal bunker and with the frame shortened accordingly. Instead, they were equipped with six-wheeled tenders with an estimated 1,700 imperial gallons (7,700 litres; 2,000 US gallons) water and 2 12 long tons (2.5 tonnes) coal capacity.[1]

They were also designated 1st Class when a locomotive classification system was introduced by the CGR.[1]

Service

Cape Government Railways

At the time these locomotives entered service, the two Midland lines from Port Elizabeth were open as far as Graaff Reinet and Cradock respectively.[3]

One of them, no. M48, later became known as the Colesberg Buster during the years it worked on the line between Colesberg Junction and Colesberg town. In this role it was equipped with one of the earlier small four-wheeled tenders.[1]

According to some sources one of these locomotives, no. 445, was sold to the Nyasaland Railways at some stage.[1][4]

However, serious doubt exists that the engine ever went to Nyasaland, since no evidence of such a sale have come to light and the locomotive is referred to in the South African Railways (SAR) renumbering and classification lists of 1912 as being at Uitenhage and recommended for scrapping.[2][5]

South African Railways

The Union of South Africa was established on 31 May 1910, in terms of the South Africa Act. One of the clauses in the Act required that the three Colonial Government railways, the CGR, the Natal Government Railways and the Central South African Railways, also be united under one single administration to control and administer the railways, ports and harbours of the Union. While the SAR came into existence in 1910, the actual classification and renumbering of all the rolling stock of the three constituent railways required careful planning and was only implemented with effect from 1 January 1912.[3][5]

By 1912 only three of these locomotives survived. One was locomotive no. 445 that had allegedly earlier been sold to Nyasaland and that, at the time, was found to be rostered at Uitenhage on the Midland system. It was considered obsolete by the SAR and was excluded from the classification and renumbering schedules. The other two, numbers 448 and 449, were also considered obsolete and were designated Class 01 and renumbered 0448 and 0449. They were all withdrawn from service in 1913.[2][5][6]

Renumbering

All these locomotives were renumbered at least three times during the CGR era, whenever a new numbering system was adopted. By 1886 the system prefixes had been done away with, with the M replaced by the numeral 1. Further renumbering was applied by 1890 and again by 1896, when first the leading numeral 1 was replaced by the numeral 2 by 1890 and the leading numeral 2 was in turn replaced by the numeral 4 by 1896.[1][2]

The works numbers, original numbers and renumberings of the Cape 1st Class of 1881 are listed in the table.[1][2][5]

See also

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Holland, D.F. (1971). Steam Locomotives of the South African Railways, Volume 1: 1859-1910 (1st ed.). Newton Abbott, Devon: David & Charles. pp. 25–26. ISBN 978-0-7153-5382-0.
  2. 2.0 2.1 2.2 2.3 2.4 C.G.R. Numbering Revised, Article by Dave Littley, SA Rail May–June 1993, pp. 94-95.
  3. 3.0 3.1 The South African Railways - Historical Survey. Editor George Hart, Publisher Bill Hart, Sponsored by Dorbyl Ltd., Published c. 1978, pp. 12, 25.
  4. Dulez, Jean A. (2012). Railways of Southern Africa 150 Years (Commemorating One Hundred and Fifty Years of Railways on the Sub-Continent - Complete Motive Power Classifications and Famous Trains - 1860-2011) (1st ed.). Garden View, Johannesburg, South Africa: Vidrail Productions. p. 36. ISBN 9 780620 512282.
  5. 5.0 5.1 5.2 5.3 Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, p. 2. (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)
  6. Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. p. 15. ISBN 0869772112.